Gas-liquid channeling

The optimal distributor design, which would prevent gas-liquid channeling, minimize nonuniformity of the gas and liquid flows, and have a minimum hydraulic resistance, is obtained via an experimental parametric approach. Five design parameters are evaluated and the following design criteria are established ... 

Gas-liquid channeling is prevented when the gas and liquid manifolds have equal pressures. 

Overflow tabs have been used throughout the plastics industry for several applications. They are used in the injection molding industry for the improvement of weld line strength of filled materials, but showed very little success [1]. They have also been used to increase the gas/liquid channel in gas-assist [2], liquid-gas assist [3], and water-assist [4] to provide a more uniform wall thickness and reduce material usage. 

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